Based on the relativistic plane-wave impulse approximation for quasielastic $(\overrightarrow{p},p^{\prime })$ and $(\overrightarrow{p},\overrightarrow{n})$ polarization observables, we provide quantitative estimates of nuclear medium modifications of the $\mathrm{NN}$ interaction. We employ a ${}^{40}$Ca target for proton energies ranging from 135 to 300 MeV at a momentum transfer of 1.97 fm${}^{-1}$. Compared to former calculations, we have generated new meson-exchange parameters for the relativistic $\mathrm{NN}$ amplitudes between 80 and 200 MeV. Finally, the results are compared to the limited available data.

• Received 18 April 1997

DOI:https://doi.org/10.1103/PhysRevC.57.448